About Koll Isaksson of Orkneys

CECILIA. Orkneyinga Saga names “Gunnhild and Cecilia” as the two daughters of “Earl Erlend Thorfinnson” and his wife “Thora, the daughter of Sumarlidi Ospaksson”, adding that Cecilia married “Isaac” and that they had “two sons Eindridi and Kol”[929].